Absorption refrigerating machine



M 11, 1937. pig-Aw Q ABSORPTION REFRIGERATING MACHINE Filed Nov. 22,1933 roamed May ll, 1937 huwfile 2.080.016 ABSORPTION BEFRIGERATINGmomma Louis Stark, Vienna, Austria; assignor of onehalf to AdultPollak-Rudin, Vienna, Austria Application November 22, 1933, Serial No.699,244 In Austria December 1, 1932 2 Claims. (Cl. 62-141) Thisinvention relates to improvements in ab- (1 designatestheboiler-absorber and f the consorption refrigerating machines forcooling liqdenser which is o! the usual construction, supuids,particularly milk and consists essentially plied with water by a hosethrough pipe q which, in making the evaporator integral with a surflowsoil through waste pipe 1'. face cooler, and arranging it between aliquid e designates a pipe connecting the condenser E distributor and acollector. and boiler-absorber and so arranged within the The inventionis also directed to the arrangelatter that its end is beneath thesurface of liqment of the boiler-absorber, the evaporator-suruid thereinwhen the boiler-absorber is in the face cooler and the condenser infixed and rigid p ition of F ure 1 and above the surface of saidrelation upon an axle, so the whole assembly can liq wh n in the P n of10 be rotated through an angle of at least ninety Such an arrangement iswell known in rotatadegrees, ble boiler-condenser assemblies in this artone In the use of refrigerators for cooling milk form being shown inBritish patent to Kauflman,

it is desirable to lower its temperature to 2 (2.; 339,121. and anotherin Fig. 4.

but this has been impossible before my invention a des ates a p p c nn ce se f with 15 since theevaporator could not be used as a.evaporator-surface cooler assembly .i.

surface cooler because the pressure within it idesignates a frame onwhich liquid receptacle would rise due to the heat absorbed from the moler b, liquid distributor c and liquid colm; as t passed over t, lectorm are rigidly mounted, and which rotatably By my present invention, itis possible to ac- S pp ts ax e it upon which boiler-absorber d,

celerate the absorption in such a way that the o d n er i. nd eaporator-surface cooler aspressure does not rise in the evaporator andits Sembly a e ri idly mounted in fixed relation temperature remainssuitable for asurface cooler. to one another. it is a vessel to receiveliquid In the accompanying drawing I have illusfrom collector m.

trated, merely by way of example and not at all 0 designates a burnerwhich is pl p n in tm sense, one b di t of my i frame 1 when theboiler-absorber is to be heated. 25 ti It is understood, of course, thatthis may be rem t drawing; placed by equivalent heating means withoutde- Figure l is a front view of the refrigerator in Parting from the opof my v nthe cooling position, and The method of operation of the deviceis easily Figure 2 is a side view thereof, looking from the pp to OneSkilled in the bu m y b d 30 left of Figure 1 in the boiling positions.scribed as follows:

Figure 3 is a detail of the arrangement of pipe The boiler-absorber 11 wl be pp ed wi h a e in the boiler-absorber d, and liquid, as water,saturated with a freely absorb- Figure 415 a transverse vertical sectionof the able gas, as ammonia. The boiler-absorber d, 35 evaporatorsurface cooler only along line 4-4 condenser I, surface-cooler i andevaporator h, of Figure 1 looking in the direction indicated by whichismounted above it and as shown in dotted th arrows, lines in Fig. 2 andby full lines in Fig. 4 opens My refrigerator-cooler consists of aliquid reinto it, being rigidly assembled together and ceiver, apre-cooler, an evaporator-surface cooler, mounted upon axle it areturned into the position 40 a boiler-absorber, a condenser, and a liquid001- shown in Fig. 2. Burner 0 is secured in place, lector, all mountedupon a supporting frame. the heating flame established, and waterstarted The boiler absorber, evaporator-surface cooler, flowing throughcondenser f, by means of a hose and condenser forma unit rigidly mountedupon attached to nipple a, the water escaping through an axle so theunit can be rotated through an nipple r, 45

' angle of at least ninety degrees. The gas is driven out of theabsorbing liquid Referring to the drawing, a designates a rein d, passesthrough the tube 6 to condenser f ceptacle for the liquid to be cooled,b a pre-cooler where it is liquefied and flows through tube g of theusual form supplied with water flowing into evaporator h. and surfacecooler 2', there from the bottom to the top thereof. being no valves inthe apparatus to hamper its 50 c designates a liquid receiver anddistributor, motion.

h and i the evaporator-surface cooler assembly The flame is thenextinguished and presently and n the liquid collector. Liquiddistributor c water flow through the condenser is stopped.

and collector m may eachbe supplied with valves When boiler-absorber diand its contained liquid K5 to control the outflow of liquid. hascooled, the boiler-absorber, evaporator, and

condenser assembly is turned into the position shown in Figure 1, waterflow through the preceoier b started and the liquid to be cooled,aliowed to flow from vessel a over the pre-cooler into distributor c,thence over evaporator h and surface cooler i into the receiver m.

The liquefied gas which flows from evaporator h into pre-cooler i whenthe position of Fig. 1 is assumed absorbs heat from the liquid as itflows over the surface cooler, is vaporized and flows back throughcondenser f and tube e into the liquid in the boiler-absorber d when itis absorbed.

The operation cycle above described is repeated as often as desired.

I claim:

1. An absorption refrigerating machine for cooling liquids, particularlymilk which comprises a vertical frame, a pre-cooler rigidly mounted inthe upper portion of said frame, a boiler-absorber, a condenser, meansestablishing direct communication between said boiler-absorber and OOH?denser, an evaporator-surface cooler assembly and means establishingconnection between said assembly and said condenser, theboiler-absorber, condenser and evaporator-surface cooler assembly beingrigidly connected into a rotatable unit, means for mounting said unitbeneath said precooler for rotation between a vertical and a horizontalposition, and means for distributing milk over the surface of thepro-cooler and evaporatorsurface cooler when the latter is in itsvertical position.

2. In an absorption refrigerating machine for liquids, especially milk,a rigidly mounted precooler, a rotatable unit. comprising aboiler-absorber, condenser and evaporator-surface cooler rigidlyconnected together, means for mounting said unit for rotation between avertical and a horizontal position, and means for distributing v aliquid over the surfaces of the pre-cooler and evaporator-surface coolerwhen the latter is in its vertical position.

LOUIS STARK.

